Debut Album : 2007 first album ‘Cheerful Sensibility’
Title song: ‘Love Sick’

The band name means ‘Five treasure island’ which signifies Treasure Island of five.
On June 7 2007, the group debuted their first album <Cheerful Sensibility>’s “Love sick” song.
‘Love sick’ grabbed the top spot of the charts for 3weeks in a row and selling over 80.000 copies.
2007 Golden Disk Awards : Newcomer Award.
2010 Golden Disk Awards : Cosmopolitan Rock Music Award.
Popular Songs : ‘Love sick’ ‘Thunder’ ‘Only for one person’ ‘Until you return’ ‘After love’